Which figure could be the result of dilation the trapezoid with a scale factor between 0 and 1​

Diane’s bank is offering 5% interest, compounded monthly. if diane invests $10,500 and wants $20,000 when she withdrawals, how long should she keep her money in for? round to the nearest tenth of a year.

Can someone show me step by step how to do this?

If on=8x-8,lm=7x+4,nm=x-5,and ol=3y-6